#4201: Improve eta reduction
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Reporter: simonpj | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 6.12.3
Keywords: | Difficulty:
Os: Unknown/Multiple | Testcase:
Architecture: Unknown/Multiple | Failure: None/Unknown
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Comment(by LouisWasserman):
Patch uploaded. Arity checking appears to still need some tweaking,
because I still get functions that look like (\ x -> f (x `cast` a))
inside bigger functions, and replacing "fun_arity fun >= incoming_arity"
with True seems to eliminate that, so something might be up with testing
the arity of casted functions.
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4201#comment:3>
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